Updated openstack/openstack
Project: openstack/cinder  09de7d676d23ad27cd3da1a0a2112d0efeefc727
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Switch over to oslosphinx

oslosphinx is the new name of oslo.sphinx

Closes-Bug: #1277168
Change-Id: Ib30a4a5eb3a86ad5c03324a59e1a8ee4d4897a70